Warning: require_once(C:\xk\include\common.inc.php) [function.require-once]: failed to open stream: No such file or directory in C:\xk\qasubject.php on line 4

Fatal error: require_once() [function.require]: Failed opening required 'C:\xk/include/common.inc.php' (include_path='.;C:\php\pear') in C:\xk\qasubject.php on line 4